code: def _coeff_smooth(lam):
      xi = 1 - 96 * lam + 24 * lam * sqrt(3 + 144 * lam)
      omeg = arctan2(sqrt(144 * lam - 1), sqrt(xi))
      rho = (24 * lam - 1 - sqrt(xi)) / (24 * lam)
      rho = rho * sqrt((48 * lam + 24 * lam * sqrt(3 + 144 * lam)) / xi)
      return rho, omeg
  
file_path: scipy/scipy/signal/_bsplines.py
imports: from numpy import asarray, pi, zeros_like, array, arctan2, tan, ones, arange, floor, r_, atleast_1d, sqrt, exp, greater, cos, add, sin
  from ._spline import cspline2d, sepfir2d
  from ._signaltools import lfilter, sosfilt, lfiltic
  from scipy.interpolate import BSpline
label_desc: Use image node_id 5 for calling a global function with example usage: _coeff_smooth(lam) and returns: rho,  omeg